I began this drawing early this year, but never finished it because there were so much things I didn't like, that I got depressed over it (she was a giraffe with horrible mane and all). But I wanted to test colouring on a little drawing, so I took it back months after, corrected what I didn't like, and took several hours doing the colours. I wanted to do a more vibrant colouring, more shining, because my colours are always "flat" (and most of the time, I got bored of a drawing I like because of my colouring).

The dreams she gives others are mostly not chosen by her (although she can create one at 100%). Her magic draws the most pleasant feeling and most inner desire the pony have and it's used to create an illusion, and thus a good dream. Fears and sadness, sources of nightmares, are not drawn by her power!

Well, it's still could be used for evil, if Stellaria is sad or feared and wanted to pass that on sleeping ponies, but nightmares (and those negatives emotions) weaken her power, so it wouldn't be very effective in most case^^

Materialise a dream from desires and feelings isn't very "magic consuming", that's why she can do it with several ponies if she want. But that doesn't mean she can't create something that has nothing to do with the pony!

Let's say she want to let dream a pony of a pink forest with blue bunnies. The pony itself never think of this before, it's not a desire or a inner feeling. There, Stellaria would push her power to let the pony dreams of something created magically and she must focus on every details of the dream. Naturally, she can do that to a single pony at a time, and it uses a lot of magic. It's not just creating an illusion with the subconscious of the pony, it's creating 100% of the dream. Is it more clear?^^

Usually, she would do this when she's bored. Letting other ponies dream with her magic doesn't allow her to know the content of the dream, she just gets the general feeling the pony has with it (that's why nightmares aren't a good thing for her). But with creating a dream, she lives it with the pony (and no, she never used it for selfish reasons^^)

And since ponies always remember dreams they had with her magic, it's a good way to pass some messages sometimes^^